Dr. Erwin Frank, an anthropology professor at the Federal University of Roraima, Brazil, is quoted in the Telegraph as having defended the violent practice, saying, "This is their way of life and we should not judge them on the basis of our values. The difference between the cultures should be respected."
Certain tribes believe that some babies are "cursed" and therefore do not have souls. Such children include those with physical disabilities, females (or any children of an undesired gender), babies born to unwed mothers, twins or triplets. These "cursed" children are sometimes smothered by leaves, poisoned, buried alive by parents or simply left to die of exposure.